Dampers are devices used to control the flow of air or fluid in various systems. They can be found in heating, ventilation, and air conditioning HVAC systems, where they help regulate temperature and airflow. By opening or closing, dampers can direct air to specific areas, improving comfort and energy efficiency. In addition to HVAC systems, dampers are also used in musical instruments, such as pianos. In this context, a damper stops the vibration of the strings when a key is released, allowing for better control of sound and tone. This function is essential for achieving the desired musical expression.